<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>登录</h1>
<div>
<input v-model="user.username" placeholder="用户名"><br>
<input v-model="user.password"  placeholder="密码"><br>
<input type="button" value="登录" @click="login()">
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
   <script src=" https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>
     <script>
       let v=new Vue({
         el:"body>div",
         data:{
user:{
  username:"",
  password:""
},
             info:"",info1:""
         },
         methods:{
           login(){
             axios.post("/login",v.user).then(function (response) {
               if(response.data==1){
                 alert("成功")
               }else if(response.data==2){
                   alert("用户名不存在")
               }else {
                 alert("密码错误")
               }
             })
           },

         }
       })

     </script>
</body>
</html>